evidence supporting that infant's imitation is intentional : Murray & Treverthen
-study on 2 month old infants
-first condition : babies interacted via video monitor with mother
-second condition : video monitor played tape of mother so image didn't respond to infant's gestures
-2nd condition : babies showed severe distress when tried to attract mum's interest
-babies became disinterested and turned away
-shows infant actively trying to get response, active & intentional partner in interaction